Draw-detecting mechanism for looms.



mg. TEXTILES? W W. P. PHILLIPS & D. EUBANKS. DRAW DETECTING MECHANISMFOR LOOMS.

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WILLIAM P. PHILLIPS AND SAYERS D. EUBANKS, OF WEST DURHAM, NORTHCAROLINA.

DRAW-DETECTING MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed. March 23,1908. Serial No. 422,834.

' a draw occur in any of the threads.

When there is a cross or hitch in the warp or tangles should occur, thenthere is tend ency to tighten the threads in such a manner as to make abad looking place in the cloth unless the loom be stopped before thiscan occur and the trouble be remedied.

The present invention comprises a means used in connection with thelease rods of the loom so that a structure will be caused to move intothe path of the oscillating bar of awarp stop motion loom and the loombe thereby stopped whenever either lease rod is actuated by a cross ortangle or hitch in the warp threads. The lease rods are normally held bya yielding force in a position to maintain a strap or bar having in it ajoint capable of being flexed, in a position to hold an interferingstructure out of the path of the oscillating bar. Should, however,either lease rod be engaged by a crossed or tangled warp, then the forceholding this bar against movement will be overcome and the connectionfrom this bar will be flexed, thus moving the interfering structure intothe path of the oscillating bar and thus cause the loom to knock off.

The invention will be best understood by a consideration of thefollowing detail description taken-in connection with the accompanyingdrawings, forming a part of this specification, in which drawings Figure1 is an elevation, partly in section, of so much of a loom as isnecessary to be illustrated, showing the invention applied thereto. Fig.2 is a perspective view of the part of the structure constituting theinvention, together with some of the coacting parts.

Referring to the drawings, there is shown a portion of a loom frame 1,together with the whip roll 2, back lease rod 3, and front lease rod/i.

Attached to each end of the lease rod 3,

though but one end of the latter is shown in the drawings, is a strap 6having one end bent into an eye 7 sprung around the lease rod so as tomove radially about the axis of the lease rod. The other end of thestrap 6 is bent at right angles to the first end, as shown at 8, and tothis end 8 there is pivoted a link 9, the other end of which ispivotally connected to an open eye 10 on a rod 11 fast to a fixedportion 12 of the frame of the loom. The lease rod is under the controlof the weight 13 secured by a cord 14 to the corresponding end of saidlease rod, it being understood that while these parts are shown asconnected to one end only of the lease rod, there will be duplicatestructures like that described at each end of the structure. The warpthreads are indicated at 15.

The link 9 is passed through or may be otherwise connected to a slidingbar 16, in the path of the lower end of which is a vibrating oroscillating bar 17 which is assumed to be connected to the throw-0Emechanism of the loom in the usual manner. The particular structure ofthe throw-0E mechanism need not be illustrated since the action of suchstructures is well known and any of the approved means may be used. Thecorresponding ends of thelease rods are connected by a coupling 18 sothat the two lease rods move together.

Suppose, now, that any of the warp threads become crossed or entangledor otherwise bound together, then the entangled portion ultimatelyreaches the lease rod 3 and the latter is moved toward the right, asviewed in Fig. 1, against the action of the weight 13. Or if theentanglement takes place between the two lease rods, then when itreaches the lease rod 4 the same action takes place as when theentanglement engages the lease rod 3. Under normal conditions the weight13'is sufficient to maintain the strap 6 and link 9 in alinement ornearly so with the bar 16 elevated out of the path of the vibratingfeeler 17 As soon as the entangled threads reach the lease rod 3 orlease rod 4, the said rods are moved, as stated, toward the right andthe strap 6 and link 9 are flexed at the joint between them so that thelink 9 moving about the eye 10 as a pivot is inclined downward to suchan extent as to permit the bar 16 to drop until its lowerend is in thepath of the feeler 17, the latter being stopped by the bar 16, and

this causes the loom to throw off in the usual manner. -It is immaterialwhere the defect in the warp threads may occur, since the two lease rods3 and 4 being held by the weights 13 at each end will move bodilyforward under the action of the entangled threads and cause the bars 16at each end to drop into the path of the oscillating feeler.

The device is attachable to any type of loom having a warp stop motionwithout requiring any change of the structure of the same, and theinvention provides a simple and very efficient means for stopping theloom before the cross or entangled warp threads can bring strain uponthe cloth in such a manner as to produce a faulty spot therein.

hat is claimed is l. A draw detecting mechanism for looms comprising aflexible connection having one end attachable to a fixed portion of theloom and the other end directly attachable to one of the lease rods ofthe loom, said connection being flexible in a direction to move towardand from a feeler and provided with means movable by the flexing of saidconnection into the path of the feeler, and means for holding theflexible connection normally in a substantially taut condition andthereby sustain the first named means normally out of the path of thefeeler.

2. In a loom, a draw detecting mechanism therefor comprising a strap inpivotal connection with a lease rod of the loom, a link pivoted to saidstrap at one end and pivotally connected at the other end to a fixedportion of the loom frame, connections controlled by the link andmovable into operative relation with a feeler in said loom, and yieldingmeans coacting with the lease rods to hold the strap and link insubstantial alinement.

3. In a loom, lease rods, a weight connected therewith and acting on thelease rods in opposition to the progressive movement of the warpthreads, a strap in pivotal relation to the lease rods at one end, alink pivotally connected to the other end of said strap, meanscontrolled by said link in operative relation to a feeler, and a pivotalsupport for the other end of the link fast on a fixed portion of theloom frame.

4-. In a loom, lease rods, a weight connected thereto and acting on thelease rods in opposition to the progressive movement of the warpthreads, a strap having one end formed into an eye embracing a leaserod, a link pivotally connected to the other end of the strap, a pivotalsupport for that end of the link remote from the strap, and a barcarried by the link.

In testimony thatwe claim the foregoing as our own, we have heretoaffixed our signatures in the presence of two witnesses.

WILLIAM P. PHILLIPS. SAYERS D. EUBANKS.

\Vitnesses E. K. Pown, IV. H. MUSE, Jr.

